1 files changed, 279 insertions, 0 deletions
diff --git a/netwerk/test/gtest/TestNamedPipeService.cpp b/netwerk/test/gtest/TestNamedPipeService.cpp
new file mode 100644
index 0000000000..c26424e46c
--- /dev/null
+++ b/netwerk/test/gtest/TestNamedPipeService.cpp
@@ -0,0 +1,279 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "TestCommon.h"
+#include "gtest/gtest.h"
+
+#include <windows.h>
+
+#include "mozilla/Atomics.h"
+#include "mozilla/Monitor.h"
+#include "nsNamedPipeService.h"
+#include "nsNetCID.h"
+
+#define PIPE_NAME L"\\\\.\\pipe\\TestNPS"
+#define TEST_STR "Hello World"
+
+using namespace mozilla;
+
+/**
+ * Unlike a monitor, an event allows a thread to wait on another thread
+ * completing an action without regard to ordering of the wait and the notify.
+ */
+class Event {
+ public:
+  explicit Event(const char* aName) : mMonitor(aName) {}
+
+  ~Event() = default;
+
+  void Set() {
+    MonitorAutoLock lock(mMonitor);
+    MOZ_ASSERT(!mSignaled);
+    mSignaled = true;
+    mMonitor.Notify();
+  }
+  void Wait() {
+    MonitorAutoLock lock(mMonitor);
+    while (!mSignaled) {
+      lock.Wait();
+    }
+    mSignaled = false;
+  }
+
+ private:
+  Monitor mMonitor;
+  bool mSignaled = false;
+};
+
+class nsNamedPipeDataObserver final : public nsINamedPipeDataObserver {
+ public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSINAMEDPIPEDATAOBSERVER
+
+  explicit nsNamedPipeDataObserver(HANDLE aPipe);
+
+  int Read(void* aBuffer, uint32_t aSize);
+  int Write(const void* aBuffer, uint32_t aSize);
+
+  uint32_t Transferred() const { return mBytesTransferred; }
+
+ private:
+  ~nsNamedPipeDataObserver() = default;
+
+  HANDLE mPipe;
+  OVERLAPPED mOverlapped;
+  Atomic<uint32_t> mBytesTransferred;
+  Event mEvent;
+};
+
+NS_IMPL_ISUPPORTS(nsNamedPipeDataObserver, nsINamedPipeDataObserver)
+
+nsNamedPipeDataObserver::nsNamedPipeDataObserver(HANDLE aPipe)
+    : mPipe(aPipe), mOverlapped(), mBytesTransferred(0), mEvent("named-pipe") {
+  mOverlapped.hEvent = CreateEventA(nullptr, TRUE, TRUE, "named-pipe");
+}
+
+int nsNamedPipeDataObserver::Read(void* aBuffer, uint32_t aSize) {
+  DWORD bytesRead = 0;
+  if (!ReadFile(mPipe, aBuffer, aSize, &bytesRead, &mOverlapped)) {
+    switch (GetLastError()) {
+      case ERROR_IO_PENDING: {
+        mEvent.Wait();
+      }
+        if (!GetOverlappedResult(mPipe, &mOverlapped, &bytesRead, FALSE)) {
+          ADD_FAILURE() << "GetOverlappedResult failed";
+          return -1;
+        }
+        if (mBytesTransferred != bytesRead) {
+          ADD_FAILURE() << "GetOverlappedResult mismatch";
+          return -1;
+        }
+
+        break;
+      default:
+        ADD_FAILURE() << "ReadFile error " << GetLastError();
+        return -1;
+    }
+  } else {
+    mEvent.Wait();
+
+    if (mBytesTransferred != bytesRead) {
+      ADD_FAILURE() << "GetOverlappedResult mismatch";
+      return -1;
+    }
+  }
+
+  mBytesTransferred = 0;
+  return bytesRead;
+}
+
+int nsNamedPipeDataObserver::Write(const void* aBuffer, uint32_t aSize) {
+  DWORD bytesWritten = 0;
+  if (!WriteFile(mPipe, aBuffer, aSize, &bytesWritten, &mOverlapped)) {
+    switch (GetLastError()) {
+      case ERROR_IO_PENDING: {
+        mEvent.Wait();
+      }
+        if (!GetOverlappedResult(mPipe, &mOverlapped, &bytesWritten, FALSE)) {
+          ADD_FAILURE() << "GetOverlappedResult failed";
+          return -1;
+        }
+        if (mBytesTransferred != bytesWritten) {
+          ADD_FAILURE() << "GetOverlappedResult mismatch";
+          return -1;
+        }
+
+        break;
+      default:
+        ADD_FAILURE() << "WriteFile error " << GetLastError();
+        return -1;
+    }
+  } else {
+    mEvent.Wait();
+
+    if (mBytesTransferred != bytesWritten) {
+      ADD_FAILURE() << "GetOverlappedResult mismatch";
+      return -1;
+    }
+  }
+
+  mBytesTransferred = 0;
+  return bytesWritten;
+}
+
+NS_IMETHODIMP
+nsNamedPipeDataObserver::OnDataAvailable(uint32_t aBytesTransferred,
+                                         void* aOverlapped) {
+  if (aOverlapped != &mOverlapped) {
+    ADD_FAILURE() << "invalid overlapped object";
+    return NS_ERROR_FAILURE;
+  }
+
+  DWORD bytesTransferred = 0;
+  BOOL ret =
+      GetOverlappedResult(mPipe, reinterpret_cast<LPOVERLAPPED>(aOverlapped),
+                          &bytesTransferred, FALSE);
+
+  if (!ret) {
+    ADD_FAILURE() << "GetOverlappedResult failed";
+    return NS_ERROR_FAILURE;
+  }
+
+  if (bytesTransferred != aBytesTransferred) {
+    ADD_FAILURE() << "GetOverlappedResult mismatch";
+    return NS_ERROR_FAILURE;
+  }
+
+  mBytesTransferred += aBytesTransferred;
+  mEvent.Set();
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsNamedPipeDataObserver::OnError(uint32_t aError, void* aOverlapped) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+BOOL CreateAndConnectInstance(LPOVERLAPPED aOverlapped, LPHANDLE aPipe);
+BOOL ConnectToNewClient(HANDLE aPipe, LPOVERLAPPED aOverlapped);
+
+BOOL CreateAndConnectInstance(LPOVERLAPPED aOverlapped, LPHANDLE aPipe) {
+  // FIXME: adjust parameters
+  *aPipe =
+      CreateNamedPipeW(PIPE_NAME, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
+                       PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE | PIPE_WAIT, 1,
+                       65536, 65536, 3000, NULL);
+
+  if (*aPipe == INVALID_HANDLE_VALUE) {
+    ADD_FAILURE() << "CreateNamedPipe failed " << GetLastError();
+    return FALSE;
+  }
+
+  return ConnectToNewClient(*aPipe, aOverlapped);
+}
+
+BOOL ConnectToNewClient(HANDLE aPipe, LPOVERLAPPED aOverlapped) {
+  if (ConnectNamedPipe(aPipe, aOverlapped)) {
+    ADD_FAILURE()
+        << "Unexpected, overlapped ConnectNamedPipe() always returns 0.";
+    return FALSE;
+  }
+
+  switch (GetLastError()) {
+    case ERROR_IO_PENDING:
+      return TRUE;
+
+    case ERROR_PIPE_CONNECTED:
+      if (SetEvent(aOverlapped->hEvent)) break;
+
+    default:  // error
+      ADD_FAILURE() << "ConnectNamedPipe failed " << GetLastError();
+      break;
+  }
+
+  return FALSE;
+}
+
+static nsresult CreateNamedPipe(LPHANDLE aServer, LPHANDLE aClient) {
+  OVERLAPPED overlapped;
+  overlapped.hEvent = CreateEvent(NULL, TRUE, TRUE, NULL);
+  BOOL ret;
+
+  ret = CreateAndConnectInstance(&overlapped, aServer);
+  if (!ret) {
+    ADD_FAILURE() << "pipe server should be pending";
+    return NS_ERROR_FAILURE;
+  }
+
+  *aClient = CreateFileW(PIPE_NAME, GENERIC_READ | GENERIC_WRITE,
+                         FILE_SHARE_READ | FILE_SHARE_WRITE, nullptr,
+                         OPEN_EXISTING, FILE_FLAG_OVERLAPPED, nullptr);
+
+  if (*aClient == INVALID_HANDLE_VALUE) {
+    ADD_FAILURE() << "Unable to create pipe client";
+    CloseHandle(*aServer);
+    return NS_ERROR_FAILURE;
+  }
+
+  DWORD pipeMode = PIPE_READMODE_MESSAGE;
+  if (!SetNamedPipeHandleState(*aClient, &pipeMode, nullptr, nullptr)) {
+    ADD_FAILURE() << "SetNamedPipeHandleState error " << GetLastError();
+    CloseHandle(*aServer);
+    CloseHandle(*aClient);
+    return NS_ERROR_FAILURE;
+  }
+
+  WaitForSingleObjectEx(overlapped.hEvent, INFINITE, TRUE);
+
+  return NS_OK;
+}
+
+TEST(TestNamedPipeService, Test)
+{
+  nsCOMPtr<nsINamedPipeService> svc = net::NamedPipeService::GetOrCreate();
+
+  HANDLE readPipe, writePipe;
+  nsresult rv = CreateNamedPipe(&readPipe, &writePipe);
+  ASSERT_TRUE(NS_SUCCEEDED(rv));
+
+  RefPtr<nsNamedPipeDataObserver> readObserver =
+      new nsNamedPipeDataObserver(readPipe);
+  RefPtr<nsNamedPipeDataObserver> writeObserver =
+      new nsNamedPipeDataObserver(writePipe);
+
+  ASSERT_TRUE(NS_SUCCEEDED(svc->AddDataObserver(readPipe, readObserver)));
+  ASSERT_TRUE(NS_SUCCEEDED(svc->AddDataObserver(writePipe, writeObserver)));
+  ASSERT_EQ(std::size_t(writeObserver->Write(TEST_STR, sizeof(TEST_STR))),
+            sizeof(TEST_STR));
+
+  char buffer[sizeof(TEST_STR)];
+  ASSERT_EQ(std::size_t(readObserver->Read(buffer, sizeof(buffer))),
+            sizeof(TEST_STR));
+  ASSERT_STREQ(buffer, TEST_STR) << "I/O mismatch";
+
+  ASSERT_TRUE(NS_SUCCEEDED(svc->RemoveDataObserver(readPipe, readObserver)));
+  ASSERT_TRUE(NS_SUCCEEDED(svc->RemoveDataObserver(writePipe, writeObserver)));
+}